Method of making castings.



J. J. MANNING & J. W. STEPHENSON.

METHOD OF MAKING OASTINGS.

- APPLIGA-TION FILED JAN. 15, 1907.

Pater itedmay 25, 1909.

2 SHEETS-SHEET 1.

, INVENTORS. o. 3- malmumq WITNESSE$ J. J. MANNING'& J. W. STEPHENSON.

METHOD OF MAKING GASTINGS.

APPLICATION FILED JAN.15,'1907.

Patented M3325, 1909. v

2 SHEETS-SHEET 2.

INVENTORS.

WITNESSES UNITED eTAiEs Parana omice.

JOHN J. MANNING AND JOHN W. STEPHENSON, OF TOLEDO, OHIO, ASSIGNORSTO NATIONAL MALLEABLE (AS TINGS COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

METHOD OF MAKING OASTINGS.

Patented May 25, 1909.

Application filed January 15, 1907. Serial No. 352,393.

' T all whom it may concern:

Be it known that we, JOHN J. MANNING and JOHN W. STEPHENSON, both of Toledo,

Lucas county, Ohio, have invented -a new.

and useful Method ofMaking Castings, of which the following is a description, reference being had to the, accompan ing drawing, forming part of this speci cation, in which- Figure 1 is a sideelevation of ,a casting produced in accordance with our invention; Fig. 2 is a top plan view, partly in horizontal section; and Fig. 3 is a perspective view, showing the inner face'of the core by which the inserts are supported.

A serious objection has been found in the use of journal boxes made of malleable cast iron when applied to pedestal trucks, in that the softness of the malleable iron causes it to wear rapidly, and in a relatively short time the box must be taken out and-scrapped. We have discovered means by which these difficulties can-be overcome, and the j ournalbox provided with .a durable wearing face which will enable it to outlast the ordinary malleable box and does not entail any objectionable features in the way of expense or difiiculty of manufacture,

In the drawing, 2 represents a journal box of malleable cast iron having, on its sides, vertical grooves 3'-3 for the pedestals of the In casting this box, we employ a core such as shown in Fig. 3, which is made of baked sand or suitable core-making material and having vertical projections 3 which are counter arts of the grooves to be produced. Be ore assembling this core in the mold, we set on the projections 3 Ll-shaped pieces or cli )S of steel 4'4, which embrace the sides 0 the projections, to constitute facings therefor. These pieces arenot conti-nuous along the length of each projection, 3, but are discontinuous, so that their presence will not cause the rupture of the casting when it shrinks. The core to which the pieces 4 have been applied in'this manner is then assembled in the mold, and when the molten metal is cast it will. surround the pieces 4 and will embed them therein, in the manner shown in Fig. 2 of. the drawing so as to produce pedestal grooves having facing .pieces of steel which, being much more durable and less abradable than malleable cast shrinkage of the molten metal.

iron, will-insure a much longer period of usefulness to the box. .When the casting cools, the shrinkage of the metal efiectuallyretains the facing pieces in place Without the employcastings separated pieces of a desired facing metal, then casting the molten metal against the same, and permitting the casting toshrink upon the metal same in place.

. 2. The method herein described of making facing's to hold the castings with hard metal facings, which consists in applying to a core having projecting portions adapted to form grooves in the castings separated substantially U-shaped' pieces of adesired facing metal, then casting the molten metal against the same, and permitting the metal to shrink upon the facings to retain the same in place.

3. A casting having a lateral groove and separated inset pieces of hard 'metal spaced along the groove and held in 4. A casting having a lateral groove and separated inset, U-shape pieces of hardmetal spaced along the groove and held in place by the shrinkage of the molten'metal.

5. The herein described method which consists in applying a facing piece to a core, casting molten metal against the same, and permitting the molten ..metal to cool and shrink upon the facing piece and thereby .retain the piece in the casting.

6. The herein described method which consists in forming a core having. a rib designed to form a groove in the casting, a plying a metal facing element to the ri casting molten metal against the same, and

place by the v 

